CPU
确认 CPU 型号
[root@localhost ~]# cat /proc/cpuinfo |grep "model name"|uniq|cut -f2 -d:
Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz
[root@localhost ~]#
Super PI
计算时间越短越好
[root@localhost ~]# time echo "scale=500;4*a(1)"|bc -l -q
3.141592653589793238462643383279502884197169399375105820974944592307\
81640628620899862803482534211706798214808651328230664709384460955058\
22317253594081284811174502841027019385211055596446229489549303819644\
28810975665933446128475648233786783165271201909145648566923460348610\
45432664821339360726024914127372458700660631558817488152092096282925\
40917153643678925903600113305305488204665213841469519415116094330572\
70365759591953092186117381932611793105118548074462379962749567351885\
75272489122793818301194912
real 0m0.079s
user 0m0.077s
sys 0m0.003s
Disk
清空缓存
每次做读写测试前建议先清空缓存
sync; echo 3 > /proc/sys/vm/drop_caches
测试读性能
选择测试磁盘,建议做 2-3 组取平均值
hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 1074 MB in 3.00 seconds = 357.92 MB/sec
测试写入性能
根据业务选择不同的 BlockSize 大小按需多次测试取平均值
time dd if=/dev/zero of=/tmp/speed bs=1M count=2K conv=fsync;rm /tmp/speed
参考数据
以 10,000 rpm 300 GB SAS 硬盘为例,机型为 IBM x3650 M4,Raid 参数如下
1.Read Policy:Ahead (控制器缓存读策略:预读)
2.Write Policy:Write Back with BBU(控制器缓存写策略:有电池备份时回写)
3.IO Policy: Direct(IO 策略:直接)
4.Drive Cache:disable (硬盘缓存:禁用)
Raid | Read(MB) | Write(MB) |
---|---|---|
Raid 1 | 170 | 130 |
Raid 5 | 350 | 250 |
Raid 10 | 300 | 215 |